Floor-dressing machine.



v No. 881,639. PATENTED MAR. 10,1908.

. G. B. WATTLES.

FLOUR DRESSING MACHINE.

APPLIOATI ON FILED JUNE 12.1905.

wrrzvzsszs v IN YEN TUE v UNITED STATEQP AQENT OFFICE.

CYRA B. WATTLES, OF PROVIDENCE, RHODE' I SLAND, ASSIGNOR, BY MESN E ASSIGNMENTS,

TO ELECTRIC FLOOR SURFACER COMPANY, OF GARDINER, MAINE, A CORPORATION OF MAINE.

FLOOR-DRESSING MACHINE."

Patented March 10, 1908.

Application filed June 12, 1905. Serial No. 264,853.

To all whom "it may concern:

Be it known that I, CYRA B. WATTLES, a citizen of the United States, residing at Providence,.in the county of Providence and State of Rhode Island, have invented a new and useful Im rovementin Floor-Dressing Machines, of w 'ch the following is a specification.

This invention has reference to an improvement in floor'dressing machines and more particularly to an improvement in means for adjustingthe dressing roll of a floor dressing machine.

tending brackets in which are In a floor dressing machine supported on three or more wheels it is essential that the dressing roll (covered with an abrasive or polishing material) should be adjustable vertically so as to bring the dressing roll more or less into engagement with a floor. In practice I find that the dressing roll should be adjusted to bear hard on a floor when covered with an abrasive material such as sand paper, and lightly on the floor when covered with a polishing material such as pile fabric;

The object of my invention is to improve the construction of a floor dressi'ng machine, whereby the dressing roll is adjustable toward or awayfrom a floor and securely held in the adjusted position in the machine.-

My invention consists in the peculiar and novel construction of a floor dressing machine comprising a frame, a handle pivotally secured to the rear of the frame, three or more wheels rotatably secured to the frame, a motor secured to the frame, a dressing roll shaft, a dressing roll secured to the shaft, adjustable eccentric bearings in the frame supporting the dressing roll shaft, vertical arms on the eccentric bearings, means for rigidly connecting the vertical arms, upwardly-exsemi-circular slots on the frame, bolts the semi-circular slots and the vertical arms on the eccentric bearings whereby the bearings are rigidly secured in the adjusted position, and means for operatively connecting the motor with the dressing roll shaft, with details of construction, as will be more fully set forth hereinafter.

Figure 1 is a side view of my improved floor dressing machine, showing the means for adjusting the dressing roll, and means for operatively connecting the dressing roll adjusting mechanism with the handle, shown in broken lines, and showing a portion of the semi-circular slot a, as shown extending through the invention, and Fig. 2 is an enlarged sectional view taken on line X X of Fig. 1 through the dressing roll adjusting mechanism.

In the drawings, a indicates the frame, I) the handle, c c the rear wheels, (1 the forward wheel, e the motor, f the dressing roll shaft, 9 the dressing roll, it the dressing roll adjusting mechanism, and 'i the driving belt of my improved floor dressing machine.

The frame a is constructed to have the body portion (1 adapted to hold the motor e, the bifurcated lug a on the rear of the frame, the forwardly-extending arms a a -on the ends of each of which is formed the hub-a having the circular opening a and the u wardly-extending brackets a"'i n vFvhich is t e in 1g. 1.

The handle I) has a T-sha and a lug b on its lower en An adjusting bolt b is screw-threaded through the In and bears on the rear of the frame a.. The ower end of the handle bis pivotally secured to the bifurcated lug a by the pin 6 as shown in Fi 1.

The wheels 0 c are rotatably secured one on each side of the frame adjacent the rear to the axles c c which are secured in any well known way to the frame a. The forward wheel cl is secured centrally to the axle d which isrotatably secured at each end in bearings in the arms a a, as shown in Fig. 1..

The motor e may be of any kind desired.

In the preferred form I use an electric motor having the driving shaft e with the pulley e and the casing e secured to the body portion a of the frame a by bolts or other means.

The dressing roll g is secured to the shaft If and is covered with an abrasive materia such as sand paper or with a polishing material such as pile fabric. A pulley f is secured to the power end of the-shaft f, as shown in Fig.

The dressing roll adjusting mechanism It consists of two eccentric bearings 72/ h each bearing being rotatably supported in the circular opening a in a hub a on the forwardlyextending arms a a of the frame and constructed to have the oil-center hole 7L2 for the dressing roll shaftf and the vertical arm h" formed integral with the bearing h, as shown in Fig. 2. The vertical arms ]t3 h are rigidly conl'iectod together by the rod h which ex- )ed upper end b tends through semi-circular slots in the brackets a a and through holes in the arms li h where the ends of the red are secured by the nuts 72 h A bolt h extends through a semi-circular slot a in each of the brackets 11. a and through a hole in the vertical arms h h 'where it is secured by a nut k thus adjustably securing the arms a to the bracket 0): A rod k may be pivotally connected to one of the vertical arms h and to the handlethe motor'e through the be t i connecting the pulley 'e on the motor with the ulley f on the dressing roll shaft f, while t e operator ,moves the machine on the floor bythe handle b. When the connecting rod h is used the dressing roll is adjusted by adjusti the raising the handle 1).

bolt b on the lower end of the handle as shown in Fig. 1, and the o eration of the dressing roll on the floor may e discontinued at any time without stopping the motor c by It is-evident that the hole h for the dressing'roll shaft 1' couldbe placed in any offcenter osition in the ecc-entric bearing h, and an idler pulley could be used for adjust ing the tension of the belt ion the pulleys e a and f without materially affecting the spirit of'my invention.

Having thus described my invention, .1 claimas new and desire to secure by Letters Patent .1. A floor dressing' machine comprising a frame, wheels rotatably secured to the frame, .a motor secured to the frame, a dressing roll shaft, adressing roll secured to the shaft, eccentric bearings supporting the dressing roll shaft, and rotatably held in the frame, means esnese fof adjusting the" eccentric bearings to raise or lower the dressing roll, and means for o eratively connecting the motor with tie dressing roll shaft.

2. A floor dressing machine com rising a frame, a handle pivotally secure to the frame, wheels rotatably secured to the frame, a motor secured to the frame, a dressing roll shaft, a dressing rollsecured to the shaft, eccentric bearings sup orting the dressing roll shaft and rotatably eld in the frame, means for rigidly connecting the eccentric bearings together, means for adjustably securing the eccentric bearings to the frame, whereby the dressing roll is ad'ustable vertically in the frame, and means for operativel connecting the motor with the dressing rol shaft.

I 3. In a floor dressing machine, the combination of a frame as having the forwardly-extendin arms a a on the ends of each of which is formed the hub 0. having the circular opening a and the upwardly-extending bracket of in which is the semi-circular slot a, a motor c secured to the frame, a dressing roll shaft f, a dressing roll 9 secured to the shaft f, a dressing roll adjusting mechanism It consisting of the eccentric bearings h h each eccentric bearing being rotatably supported in a hub a on the forwardly extending arms 0. 0 of the frame and having the off-center hole h for the dressing roll shaft f and the vertical arm h a roll h ri idly secured to the arms 72. h by the nuts h a bolt h extending through each semi-circular slot 0. in the brackets 41 a and through a hole in the arms h h where it is secured by the nut k whereby the dressing roll g is adjustable vertically andsecured in the adjusted position, and means for operatively connecting the motor c with the dressing roll shaft f, as described. In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CY-RA 'B. WATTLES. Witnesses:

Bonner G; FOSTER,

J. A. MILLER, Jr. 

